I'm kinda of the mindset of some of the other previous commenters, I think the fantasy genre can handle both stylistic as well as practical armor.
I'll be honest though, I greatly preferred Dragon Age 2's armor designs far more than Dragon Age Origin, it was nice to see my Hawke and Aveline running around with their tits hanging out, and I loved that Varric ran around with his chest hair all hanging out.
I have never analysed it before, but the tendency is strong towards tits out and pecks out over practical thinking. Not saying i dont like it because i do its just funny when its pointed out
I'll be honest though, I greatly preferred Dragon Age 2's armor designs far more than Dragon Age Origin, it was nice to see my Hawke and Aveline running around with their tits hanging out, and I loved that Varric ran around with his chest hair all hanging out.